Open source. Open possibilities.

Open Kioku is a local repository intelligence tool for AI coding agents. It indexes codebases locally to provide context, generate bounded edit plans, and verify actual diffs against those plans.

Headroom compresses tool outputs, logs, RAG chunks, files, and conversation history before they reach the LLM, reducing token usage while preserving key information. Runs locally as a Python/TypeScript library, proxy, MCP server, or agent wrapper for Claude Code, Codex, Copilot, Cursor, and more.

A curated directory of 1000+ production-ready Claude Skills and plugins for enhancing AI agent productivity across Claude.ai, Claude Code, Cursor, Codex, Gemini CLI, and more.

An unofficial MCP server that gives AI assistants seven read-only tools to search, list and read any Fumadocs documentation site, working against a deployed URL or a local docs repo via a single npx command.

A multi-harness agentic plugin marketplace offering 94 plugins, 202 agents, 183 skills and 105 commands, generated from one Markdown source for Claude Code, Codex CLI, Cursor, OpenCode, Antigravity CLI and GitHub Copilot.

An AI-first engineering toolkit that provides specialized knowledge, workflows, and standards to turn AI coding agents into senior mobile engineers.

Umeng+ U-Web Analytics Skill 为 Cursor、Claude Code、通义灵码和 Qoder 等 AI 编程助手提供 HTML、H5、Vue、React、Next.js、Nuxt 及 SPA 项目的 U-Web 集成支持，涵盖 siteid 获取、事件埋点、SPA PV 处理与问题排查等功能。

designlang is a Playwright-based CLI that reads a website's live DOM and extracts its design system: DTCG tokens, Tailwind config, Figma variables, shadcn theme, component anatomy, motion tokens, brand voice, WCAG contrast audits, and multi-platform emitters, plus MCP server and Chrome extension.

AI Limits is a Chrome side-panel extension that tracks subscription usage and reset timing across twenty AI providers, normalizing each provider's quota into a single Used or Left view with local history graphs.

An MCP server for Godot 4 that provides AI clients with bidirectional control over the Godot editor, featuring live-tree editing, a step-debugger, and 231 specialized tools.

Open-source playbook pack for AI coding tools (Cursor, Claude Code, Codex CLI, Gemini CLI) with 145+ agent skills, 57 slash commands and MCP templates, automating full development workflows from onboarding to shipping, tuned for React/Next.js/Supabase.

Better Design is an open-source MCP server and shadcn/ui registry that supplies AI coding agents with design systems, semantic CSS tokens, component overrides, UI principles, icon matching, and WCAG-oriented review rules. It includes 31 themes and connects to Claude Code, Cursor, VS Code/GitHub Copilot, Claude Desktop, and other MCP clients.

brandmd is a CLI that extracts a website's design system into a spec-valid DESIGN.md passing the official @google/design.md linter, giving Claude Code, Cursor and other coding agents brand context before they write UI. Runs locally with no API key by default.

coding-agents-mcp is an MCP gateway and orchestrator for autonomous AI coding agents like Claude Code, Antigravity, Codex, and Cursor. It enables IDEs and desktop assistants to delegate tasks with session memory, Git worktree sandboxing, and inter-agent handoffs.

Open-source skill pack providing production-grade, workflow-driven engineering skills for AI coding agents, covering the full software development lifecycle from spec definition to production shipping, compatible with 70+ coding tools including Claude Code and GitHub Copilot.

An MCP server that gives AI agents analysis-ready access to Google Analytics 4 data, including schema discovery, metric aggregation, real-time reports, and built-in analytical playbooks for traffic diagnosis, e-commerce, and channel attribution.

A public collection of system prompts, internal tools, and AI models leaked/obtained from various AI tools such as Cursor, Devin, Claude Code, Perplexity, and more. Includes a security warning for AI startups and links to a related protection service.

OpenMontage is an open-source, agentic video production system that transforms AI coding assistants into full video studios, supporting end-to-end pipelines from research to final render.

Graphify is a CLI skill that maps a codebase into a queryable knowledge graph for AI coding assistants. It uses tree-sitter for local deterministic code parsing, no embeddings, and outputs graph.html, GRAPH_REPORT.md, and graph.json.

An unofficial, open-source Codex-first Agent Skills library with 80 curated skills for premium frontend, website, motion, accessibility, QA, and reliable agent workflows. Includes adapters for Claude Code, Cursor, and Gemini CLI, plus benchmarks and examples.